CN101986176A - Optical fiber rotary connector - Google Patents
Optical fiber rotary connector Download PDFInfo
- Publication number
- CN101986176A CN101986176A CN 201010519403 CN201010519403A CN101986176A CN 101986176 A CN101986176 A CN 101986176A CN 201010519403 CN201010519403 CN 201010519403 CN 201010519403 A CN201010519403 A CN 201010519403A CN 101986176 A CN101986176 A CN 101986176A
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- optical fiber
- lens
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to an optical fiber rotary connector, which comprises a stator head, a rotor head, a stator shell for fixing the stator head, a rotor sleeve for fixing the rotor head and a rotary connection device. The stator shell is sleeved outside the rotor sleeve; the rotary connection device is arranged between the stator shell and the rotor sleeve; a stator optical fiber is a hot-expanded core optical fiber or conical optical fiber with an end part core diameter of 20-40 mu m; and the rotor optical fiber has the same structure as the stator optical fiber. The optical fiber rotary connector provided by the invention solves the problems that the conventional optical fiber rotary connector has complicated structure, is difficult to install, cannot realize signal transmission of a single-mode optical fiber, and can realize the performance indexes of low cost, simple installation, high coupling efficiency, stable performance and long service life.
Description
Technical field
The present invention relates to the field of fiber rotation connector, refer in particular to a kind of optical connector spare of realizing optical fiber bidirectional rotation transmission.
Background technology
In signals transmission, need rotate the mechanism that is of coupled connections rotates from the static not dig of platform of an end platform from signal to the other end, this mechanism is called revolving joint, also claims rotary connector.Shortcomings such as the tradition rotary connector is an electric rotary connector, exists transfer rate low, and anti-electromagnetic interference (EMI) is poor, and transmission range is near.It is data transfer medium that fiber rotation connector adopts optical fiber, and the data transmission between the system unit that is rotatably connected for solution provides best technical solution.Fiber rotation connector can overcome the above-mentioned shortcoming of electric rotary connector.Being particularly suitable for being applied in need be unconfined, rotates the place that needs to transmit Large Volume Data, signal again simultaneously from the fixed position to the position of rotation continuously or intermittently.Fiber rotation connector is being widely used in the different field, as industrial mechanical arm, winch, oil exploitation platform, wind-power electricity generation, be used for the scanning system of hydrospace detection and follow the trail of radar, seabed robot, the seabed underwater acoustic system of military man-of-war, the rotation control tower of battlebus, the aircraft of space industry and Medical Devices CT scan system or the like.
United States Patent (USP) discloses a kind of fiber rotation connector No. 2007/0268805, but its structure more complicated is regulated relatively difficulty, and volume is bigger, and reliability is bad, can not satisfy the requirement of small size and light weight.
No. the 4641915th, United States Patent (USP), No. 5633963, disclose fiber rotation connector No. 4373779, but all can only adopt multimode optical fiber, can't be applied to single-mode fiber.
Chinese patent 200720096042.5 is to adopt Dove prism to realize the signal transmission.But its complex structure, the cost height, and can only be used for multimode optical fiber.
Chinese patent 20072003219.5 adopts plastic optical fiber to realize the signal transmission, still can't solve the signal transmission issues of single-mode fiber.
Above patent is all formed the fiber optic collimator system by common multimode optical fiber or plastic optical fiber and GRIN Lens, and application is narrow, can't realize being rotatably connected of single-mode fiber.
Chinese patent 200610130275.2 adopts photonic crystal fiber directly to dock and realizes the signal transmission.Subject matter is because light beam does not pass through collimated, because the spacing between the optical fiber must be very little, has caused the difficulty of installing.
Chinese patent CN201464674U adopts TEC optical fiber directly to dock and realizes the signal transmission.Subject matter is that light beam is still dispersed, so the spacing between the optical fiber must be very little, and significant limitation is arranged because light beam does not pass through collimated.
Summary of the invention
In order to solve existing fiber rotation connector complex structure, difficulty is installed, can't realizes that the signal of single-mode fiber transmits, the invention provides a kind of fiber rotation connector, can realize low cost, simple installation, coupling efficiency height, long performance index of stable performance life-span.
Technical solution of the present invention is:
A kind of fiber rotation connector, comprise stator head, rotor head, be used for fixing the stator head stator casing 7, be used for fixing the rotor sleeve 17 and the revolving joint of rotor head, described stator casing 7 is enclosed within outside the rotor sleeve 17, described revolving joint is arranged between stator casing 7 and the rotor sleeve 17
Its special character is:
The stator optical fiber 1 that described stator head comprises stator collimating apparatus 6 and is embedded in stator collimating apparatus 6 one ends, the rotor optical fiber 4 that described rotor head comprises rotor collimating apparatus 5 and is embedded in rotor collimating apparatus 5 one ends, the other end of described stator collimating apparatus 6 is embedded with stator lens 2, the other end of described rotor collimating apparatus 5 is embedded with rotor lens 3, described stator lens 2 are connected with stator optical fiber 1, and described rotor lens 3 are connected with rotor optical fiber 4; Relative and the optical axis coincidence of end face of described stator lens 2 and rotor lens 3; Described stator optical fiber 1 is hot core expansion optical fiber or the conical fiber of 20um-40um for the end core diameter; The structure of described rotor optical fiber 4 is identical with stator optical fiber 1.
Said stator lens 2 are GRIN Lens, C lens or non-spherical lens; Described rotor lens 3 are identical with stator lens 2.
Above-mentioned revolving joint comprises two bearings (10,12) that are enclosed within the rotor sleeve outside, and described two bearings 10 and 12 outer ring are spacing by 7 of stator casings, and the inner ring of described two bearings is spacing by 17 of rotor sleeves.
Above-mentioned fiber rotation connector comprises the packoff that is used for gap between sealed stator shell 7 and the rotor sleeve 17, described packoff comprises the spring sealed circle 14 that is arranged between stator casing 7 and the rotor sleeve 17 and by being bolted to the end cap 15 of stator casing 7 end faces, described end cap 15 is used for fixing spring sealed circle 14.
Above-mentioned spring sealed circle 14 adopts V-arrangement spring or O shape spring or U-shaped spring.
The advantage that the present invention has:
1, the present invention is by being provided with the fiber optic collimator system in existing fiber rotation connector, and adopted big core diameter single-mode optical fiber, reduced loss, reduced machining accuracy, realize the signal transmission of single-mode fiber, also can realize the signal transmission of high power laser.
2, the present invention has increased the distance between stator optical fiber and the rotor optical fiber by increased lens in optical fiber, has reduced the requirement to mechanical precision, has improved coupling efficiency.
3, of the present invention simple in structure, cost is lower, coupling efficiency is high, good sealing effect, reliability height, life-span are long.
Description of drawings
Fig. 1 fiber rotation connector structural representation:
Fig. 2 is the structural representation of hot core expansion optical fiber;
Fig. 3 is the structural representation of conical fiber;
Fig. 4 is an optical fiber collimator angular deviation synoptic diagram;
Fig. 5 is the damage curve of single mode fiber collimator angular error;
Fig. 6 is the damage curve of hot core expansion optical fiber collimator angular error;
Wherein: 1-stator optical fiber, 2-stator lens, 3-rotor lens, 4-rotor optical fiber, 5-rotor collimating apparatus, 6-stator collimating apparatus, the 7-stator casing, 8-spacer ring, 9-back-up ring, the 10-bearing, 11-spacer ring, 12-bearing, the 13-circlip, the spring sealed circle of 14-, 15-end cap, 16-rotor driving lever, the 17-rotor sleeve.
Embodiment
The invention provides a kind of fiber rotation connector.Fiber rotation connector comprises stator head, rotor head, bearing, rotor sleeve, end cap, spring seals, rotor driving lever, elastic scheibe, spacer ring.The stator optical fiber that the stator head comprises the stator collimating apparatus and is embedded in stator collimating apparatus one end, the other end of rotor collimating apparatus is embedded with the rotor lens, rotor head comprises the rotor collimating apparatus and is embedded in rotor collimating apparatus one end stator lens, the other end of rotor collimating apparatus is embedded with the rotor lens, the stator lens are connected with stator optical fiber, and the rotor lens are connected with rotor optical fiber.Rotor optical fiber and stator optical fiber can adopt conical fiber (taper fiber), hot core expansion optical fiber (TECfiber).Rotor lens and stator lens can adopt GRIN Lens, C lens (C lens), non-spherical lens.Various optical fiber can synthesize optical fiber collimator with above-mentioned arbitrary lens combination respectively.
As shown in Figure 1, the stator head is fixed in the endoporus of stator casing, rotor head is fixed in the rotor sleeve 17, two bearings 10 and 12 are installed on the rotor sleeve 17, be fixed in the stator casing 7 again, end cap 15 is installed on the stator casing 7 by bolt, and spring sealed circle 14 is installed between stator casing 7 and the rotor sleeve 17, and spring sealed circle 14 adopts V-arrangement spring or O shape spring or U-shaped spring.
Fiber rotation connector of the present invention, light path part is made up of stator optical fiber 1, stator lens 2, rotor optical fiber 4, rotor lens 3.Stator optical fiber 1 is hot core expansion optical fiber or conical fiber with rotor optical fiber 4.Stator lens 2 and rotor lens 3 are GRIN Lens.Adopt hot core expansion optical fiber or conical fiber to solve to adopt that general single mode fiber causes that mechanical precision is required too high problem,, therefore, can reduce the mechanical precision requirement because the fibre core of hot core expansion optical fiber or conical fiber is bigger than the core diameter of single-mode fiber.Adopt the GRIN Lens can be,, the spacing of 1～10mm can be arranged, adjusting easily between two collimating apparatuss with respect to optical fiber and the direct-connected scheme of optical fiber with beam collimation.
Hot core expansion optical fiber and stator lens 2 are encapsulated in the stator casing of tubular metal becomes stator collimating apparatus 6, hot core expansion optical fiber and GRIN Lens 3 are encapsulated in becomes rotor collimating apparatus 5 in the tubular metal rotor sleeve, stator collimating apparatus 6 is installed in the endoporus of stator casing 7, rotor collimating apparatus 5 is installed in the rotor sleeve 17, circlip 9, bearing 10, spacer ring 11, bearing 12 are installed on the rotor sleeve 17 successively, spacer ring 8 is installed in stator casing 7 endoporus, and contact the position of circlip 13 solid bearings 12 with bearing 10 outer rings.Spring sealed circle 14 is gaps of sealed stator shell and rotor sleeve 17, and end cap 15 is by bolt O-ring seal 14.
The principle of the invention:
The refringence of general single mode fiber covering and fibre core is by doped with Ge O in fibre core
2Reach.The refractive index of fiber core is higher than the refractive index of fusion pure silicon in the covering.When the heating general single mode fiber, the Ge that mixes in the fibre core
4+Ion will spread in fibre cladding, makes on the cross section of optic fibre refractive index radially be graded profile, thereby reaches the purpose that enlarges mode field diameter.
Fig. 2 is that TEC optical fiber expands the structural representation that the bundle back forms through heating; After adopting 1600 °～2000 ° thermal-flame that the single-mode fiber in about 4mm scope is carried out uniform heating, the Germanium dopants that makes optical fiber be heated in the part fibre core is diffused in the optical fiber, just can reach the effect that expands bundle.Optical fiber still is step optical fiber in bringing-up section not, and refractive index is a step between fibre core and the covering, has then formed graded index profile in bringing-up section.Fig. 3 is the structural representation of conical fiber.
The angular deviation that causes when assembling for a pair of optical fiber collimator, as shown in Figure 4.
The loss formula that the optical fiber collimator angular deviation causes is
With optical fiber output facula radius ω
0=5.05um, wavelength X=1.55um, GRIN Lens constant
GRIN Lens refractive index of the centre n
0=1.591, in the substitution formula (1), can get the optical fiber collimator angle from axle connecting curve such as Fig. 5.
As can be seen from Figure 5, the general single mode fiber collimating apparatus requires too highly for angular error, and during 0.072 ° of angular deviation, coupling loss is 1dB.Most important when therefore, optical fiber collimator is coupled is exactly the problem that solves angular deviation.
With hot core expansion optical fiber output facula radius ω
0=15um, wavelength X=1.55um, GRIN Lens constant
GRIN Lens refractive index of the centre n
0=1.591, in the substitution formula (1), can get TEC optical fiber collimator angle from axle connecting curve such as Fig. 6.
As can be seen from Figure 6, the TEC optical fiber collimator has significantly reduced for the requirement of the angular error requirement with respect to the general single mode fiber collimating apparatus, and when 0.22 ° of angular deviation, coupling loss is 1dB.Therefore, the TEC optical fiber collimator has solved a general single mode fiber collimating apparatus difficult problem too high to angular error.
Claims (5)
1. fiber rotation connector, comprise stator head, rotor head, be used for fixing the stator head stator casing 7, be used for fixing the rotor sleeve (17) and the revolving joint of rotor head, described stator casing (7) is enclosed within outside the rotor sleeve (17), described revolving joint is arranged between stator casing (7) and the rotor sleeve (17)
It is characterized in that:
The stator optical fiber (1) that described stator head comprises stator collimating apparatus (6) and is embedded in stator collimating apparatus (6) one ends, the rotor optical fiber (4) that described rotor head comprises rotor collimating apparatus (5) and is embedded in rotor collimating apparatus (5) one ends, the other end of described stator collimating apparatus (6) is embedded with stator lens (2), the other end of described rotor collimating apparatus (5) is embedded with rotor lens (3), described stator lens (2) are connected with stator optical fiber (1), and described rotor lens (3) are connected with rotor optical fiber (4); Relative and the optical axis coincidence of end face of described stator lens (2) and rotor lens (3); Described stator optical fiber (1) is hot core expansion optical fiber or the conical fiber of 20um-40um for the end core diameter; The structure of described rotor optical fiber (4) is identical with stator optical fiber (1).
2. fiber rotation connector according to claim 1 is characterized in that: described stator lens (2) are GRIN Lens, C lens or non-spherical lens; Described rotor lens (3) are identical with stator lens (2).
3. fiber rotation connector according to claim 1 and 2, it is characterized in that: described revolving joint comprises two bearings (10 that are enclosed within the rotor sleeve outside, 12), described two bearings (10,12) outer ring is spacing by stator casing (7) institute, and the inner ring of described two bearings is spacing by rotor sleeve (17) institute.
4. fiber rotation connector according to claim 3, it is characterized in that: described fiber rotation connector comprises the packoff that is used for gap between sealed stator shell (7) and the rotor sleeve (17), described packoff comprises the spring sealed circle (14) that is arranged between stator casing (7) and the rotor sleeve (17) and by being bolted to the end cap (15) of stator casing (7) end face, described end cap (15) is used for fixing spring sealed circle (14).
5. fiber rotation connector according to claim 4 is characterized in that: described spring sealed circle (14) adopts V-arrangement spring or O shape spring or U-shaped spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010519403 CN101986176A (en) | 2010-10-26 | 2010-10-26 | Optical fiber rotary connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010519403 CN101986176A (en) | 2010-10-26 | 2010-10-26 | Optical fiber rotary connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101986176A true CN101986176A (en) | 2011-03-16 |
Family
ID=43710541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010519403 Pending CN101986176A (en) | 2010-10-26 | 2010-10-26 | Optical fiber rotary connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101986176A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995602A (en) * | 2010-12-03 | 2011-03-30 | 蒋菊生 | Expanded core fiber |
| CN102221452A (en) * | 2011-06-08 | 2011-10-19 | 武汉理工大学 | Real-time monitoring device for online writing weak optical fiber Bragg grating and application method thereof |
| CN102436040A (en) * | 2011-12-08 | 2012-05-02 | 飞秒光电科技(西安)有限公司 | Optical fiber expanded beam connector |
| CN102749681A (en) * | 2012-07-18 | 2012-10-24 | 九江精达检测技术有限公司 | Device and method capable of realizing precise regulation of rotary single-path optical fiber connector |
| CN103235369A (en) * | 2013-04-25 | 2013-08-07 | 中国电子科技集团公司第八研究所 | Optical fiber rotary joint |
| CN105929488A (en) * | 2016-06-28 | 2016-09-07 | 中国电子科技集团公司第二十三研究所 | Fiber directly docking type single-core rotary connector |
| CN106125203A (en) * | 2016-08-24 | 2016-11-16 | 杭州全盛机电科技有限公司 | The optical fiber slip ring optical signal transmission structure of low-loss height rotational life and method of work |
| CN108132501A (en) * | 2017-12-18 | 2018-06-08 | 广州永士达医疗科技有限责任公司 | A kind of tube chamber road OCT one-channel optical fiber slip rings |
| JP2020506425A (en) * | 2017-01-27 | 2020-02-27 | ザ ジェネラル ホスピタル コーポレイション | System and method for providing an optical rotary joint |
| CN111123441A (en) * | 2020-01-16 | 2020-05-08 | 扬州兰都塑料科技有限公司 | Optical fiber connector for high-power laser cable |
| CN112334805A (en) * | 2018-03-01 | 2021-02-05 | 莫戈公司 | Multi-way optical fiber rotary joint |
| CN114002778A (en) * | 2021-10-26 | 2022-02-01 | 中航光电科技股份有限公司 | Optical rotary connector for vacuum environment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334507A (en) * | 2007-06-30 | 2008-12-31 | 中国科学院西安光学精密机械研究所 | Plastic fibre-optical rotating connector |
| CN201464674U (en) * | 2009-04-28 | 2010-05-12 | 普林(廊坊)光电技术有限公司 | Single channel optical fiber rotary connector |
| CN201812053U (en) * | 2010-10-26 | 2011-04-27 | 飞秒光电科技(西安)有限公司 | Rotary optical fiber connector |
-
2010
- 2010-10-26 CN CN 201010519403 patent/CN101986176A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334507A (en) * | 2007-06-30 | 2008-12-31 | 中国科学院西安光学精密机械研究所 | Plastic fibre-optical rotating connector |
| CN201464674U (en) * | 2009-04-28 | 2010-05-12 | 普林(廊坊)光电技术有限公司 | Single channel optical fiber rotary connector |
| CN201812053U (en) * | 2010-10-26 | 2011-04-27 | 飞秒光电科技(西安)有限公司 | Rotary optical fiber connector |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995602A (en) * | 2010-12-03 | 2011-03-30 | 蒋菊生 | Expanded core fiber |
| CN101995602B (en) * | 2010-12-03 | 2012-11-14 | 李光 | Expanded core fiber |
| CN102221452A (en) * | 2011-06-08 | 2011-10-19 | 武汉理工大学 | Real-time monitoring device for online writing weak optical fiber Bragg grating and application method thereof |
| CN102221452B (en) * | 2011-06-08 | 2012-07-25 | 武汉理工大学 | Real-time monitoring device for online writing weak optical fiber Bragg grating and application method thereof |
| CN102436040A (en) * | 2011-12-08 | 2012-05-02 | 飞秒光电科技(西安)有限公司 | Optical fiber expanded beam connector |
| CN102749681A (en) * | 2012-07-18 | 2012-10-24 | 九江精达检测技术有限公司 | Device and method capable of realizing precise regulation of rotary single-path optical fiber connector |
| CN103235369A (en) * | 2013-04-25 | 2013-08-07 | 中国电子科技集团公司第八研究所 | Optical fiber rotary joint |
| CN105929488A (en) * | 2016-06-28 | 2016-09-07 | 中国电子科技集团公司第二十三研究所 | Fiber directly docking type single-core rotary connector |
| CN106125203A (en) * | 2016-08-24 | 2016-11-16 | 杭州全盛机电科技有限公司 | The optical fiber slip ring optical signal transmission structure of low-loss height rotational life and method of work |
| JP2020506425A (en) * | 2017-01-27 | 2020-02-27 | ザ ジェネラル ホスピタル コーポレイション | System and method for providing an optical rotary joint |
| JP7106550B2 (en) | 2017-01-27 | 2022-07-26 | ザ ジェネラル ホスピタル コーポレイション | Systems and methods for providing optical rotary joints |
| CN108132501A (en) * | 2017-12-18 | 2018-06-08 | 广州永士达医疗科技有限责任公司 | A kind of tube chamber road OCT one-channel optical fiber slip rings |
| CN112334805A (en) * | 2018-03-01 | 2021-02-05 | 莫戈公司 | Multi-way optical fiber rotary joint |
| CN112334805B (en) * | 2018-03-01 | 2022-06-03 | 莫戈公司 | Multi-way optical fiber rotary joint |
| CN111123441A (en) * | 2020-01-16 | 2020-05-08 | 扬州兰都塑料科技有限公司 | Optical fiber connector for high-power laser cable |
| CN111123441B (en) * | 2020-01-16 | 2021-04-09 | 扬州兰都塑料科技有限公司 | Optical fiber connector for high-power laser cable |
| CN114002778A (en) * | 2021-10-26 | 2022-02-01 | 中航光电科技股份有限公司 | Optical rotary connector for vacuum environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201812053U (en) | Rotary optical fiber connector | |
| CN101986176A (en) | Optical fiber rotary connector | |
| US7515782B2 (en) | Two-channel, dual-mode, fiber optic rotary joint | |
| US5039193A (en) | Fibre optic single mode rotary joint | |
| CN113376758B (en) | Optical fiber rotary connector based on doublet lens and application thereof | |
| US20070019908A1 (en) | Fiber optic rotary joint with de-rotating prism | |
| CN104536100A (en) | Multi-core optical fiber connector based on gradient refractive index lenses | |
| US20100195956A1 (en) | Multi-channel fiber optic rotary joint using de-rotating lens | |
| WO2019119485A1 (en) | Lumen oct single-channel optic fiber slip ring | |
| CN104454007A (en) | Mine safety early warning system based on multi-fiber-core optical fibers | |
| CN111796366A (en) | Single-channel optical fiber rotary connector with long space life | |
| GB2585505A (en) | WFOV and NFOV shared aperture beacon laser | |
| JPS62194206A (en) | Optical fiber type slip ring apparatus | |
| CN109239858B (en) | Optical fiber collimator butt joint type single-core optical rotary connector and installation method | |
| CN207742374U (en) | A kind of mini optical fibre rotary connector | |
| CN105929488A (en) | Fiber directly docking type single-core rotary connector | |
| CN104793296A (en) | Active fiber optic rotary connecting device and method | |
| CN103472539B (en) | A kind of method of hollow light slip ring and transmission optical signal thereof | |
| CN102436040A (en) | Optical fiber expanded beam connector | |
| CN201616584U (en) | Structure for monitoring power of fiber-coupled laser at visible light wave band | |
| CN104238024B (en) | Off-axis optical fiber rotating connector based on annular cylindrical lenses | |
| Sun et al. | A multicore optical fiber for distributed sensing | |
| Lallana et al. | Sensing applications in aircrafts using polymer optical fibres | |
| CN111796367B (en) | Space long-life binary channels optic fibre rotary connector | |
| CN202433563U (en) | Optical fiber expanded beam connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110316 |